8129910617 has 2 divisors, whose sum is σ = 8129910618. Its totient is φ = 8129910616.

The previous prime is 8129910571. The next prime is 8129910653. The reversal of 8129910617 is 7160199218.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6885514441 + 1244396176 = 82979^2 + 35276^2 .

It is a cyclic number.

It is not a de Polignac number, because 8129910617 - 2²⁰ = 8128862041 is a prime.

It is not a weakly prime, because it can be changed into another prime (8129910667) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4064955308 + 4064955309.

It is an arithmetic number, because the mean of its divisors is an integer number (4064955309).

Almost surely, 2^8129910617 is an apocalyptic number.

It is an amenable number.

8129910617 is a deficient number, since it is larger than the sum of its proper divisors (1).

8129910617 is an equidigital number, since it uses as much as digits as its factorization.

8129910617 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 54432, while the sum is 44.

The square root of 8129910617 is about 90166.0169742459. The cubic root of 8129910617 is about 2010.7678078668.

The spelling of 8129910617 in words is "eight billion, one hundred twenty-nine million, nine hundred ten thousand, six hundred seventeen".